Snap-fastener.



PATENTED SEPT. 5, 1905.

E. D. SIMONS.

SNAP FASTBNER.

APPLICATION FILED N0\T.14,1904.

q Ui Mmmea 67/2/ PrYllENT OFFIE SNAP-FASTENER.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application filed November 14, 1904. Serial No. 232,635.

To (/71 11-71mm if ntr/ veneer/1 Be it known that l, Euxns'r l). Snioxs,a citizen of the United States, residing at \Vaterbury, in thecountyofNew Haven and State of Connecticut, have invented a certain new anduseful improvement in Sinip-l asteners, of which the following is afull, clear, and exact description.

Snapfasteners for garments and other articles have been fastened to thearticle by the use of prongs integral with or applied to them, suchprongs passing through the article from one side and clenched upon theother side of the article or within a receiving-cap applied to thisopposite side, and this cap also affords an external or exposed finishfor the fasteners. It is old also to construct a snapfastener of asocket member applied to one side of an article and having a partprojecting through a hole in the article and engaged by a cap applied tothe other side of the article and serving both as the fastening andlinishing mediums of the fastener. in this class of fasteners thesubstance of the article is gripped between the flange of the socket andthe cap; but in the use of this class of snapfasteners in holes intextile fabrics, looselywoven textures, and thin and elastic materialsand where appreciable strain results it frequently occurs that the gripof the socket and cap on the article is impaired and the hole in thearticle is enlarged or stretched and the socket is pulled out of thearticle, thus not only losing the socket, but usually irremediablyinjuring the article.

The object of this invention is to overcome the diliiculties abovementioned; and to this end the invention consists in a socket forsnap-fasteners having a base-flange and a chamber rising therefromadapted to enter a hole inan article to which it is to be applied and toreceive the stud member and also the fastening device, said flange madeup of a series of spring-arms in each of which is a prong or spuradapted to bite into the substance of the article as far distant as ispossible within the bounds of the socket from the edge of thesocket-receiving hole in the article, so as to grip and impale thesubstance of the article about said hole, and thus, on the one hand,relieve the fastening-cap of that duty, while, on the other hand,themselves subserving no essential function as fastening mediums for thesocket or its cap.

ln the accompanying drawings, illustrating the invention, in the severalfigures of which like parts are similarly designated, Figure l aperspective view showing one embodiment of the invention. Fig. 2 is acrosssec tion of the construction in Fig. 1. Fig. 3 is a perspectiveview illustrating another form of the invention. Fig. 11: is across-section of the form shown in l ig. 3. Fig.5 is a crosssectionillustrative ofeither of the two forms of the invention shown in theother ligures and the application thereof to a piece of fabric.

The basedlange l of the socket and the studreceiving chamber 2, risingcentrally therefrom, are integral and slittcd radially to form a seriesof spring arms or sections, the slits extending from the lower part ofthe studreceiving chamber 2 into and clear across the base-flange. Thestud-receiving chamber is made with an open top 3 to receive thefastening and finishing cap a, (see Fig. 5,) which cap is made,preferably, as a sort of headed eyelet or hollow rivet, the tubularportion of which is passed into the open end of the stud receivingchamber 2 and expanded therein, as shown in Fig. 5.

\Vhen a snap-fastener comprising, essentially, a socket member and afastening-stud is applied to articles by entering the studreceivingchamber and hole in the article, as at in Fig. 5, and the article is oftextile fabric or is of loose texture or is thin or elastie, itsometimes happens that the grip upon the cloth between the cap and theflange is insullicient to resist the strains of use putupon the device,and the result is that the device pulls out of the article. In order toresist this tendency, I, provide an auxiliary grip upon the articlearound the hole therein and as far distant therefrom as possible, and,as shown in Figs. 1, 2, and, let us say, 5, these auxiliary grippingdevices may consist of prongs (5, cut from the substance of thebase-flange and within its periphery and struck up therefromsubstantially at right angles, or, as shown in Figs. 3 and a, theauxiliary gripping devices maybe the burs or spurs 7, formed by punchingholes in the base-flange. It is not necessary that these prongs or spursshould extend entirely through the fabric and it is immaterial whetherthey do or not, since their points are covered usually by the cap 4, andin any event these prongs or spurs have as their essential andfundamental function not that of fas- 5 tening the socket to thearticle, but of gripping and impaling the article around the hole madetherein, so as to serve as an auxiliary to resist the strains upon thesocket which would have a tendency to pull the socket from the article.

As shown, the base-flange may be provided with dents 8, which sink moreor less into the substance of the article and assist in gripping thearticle.

The slits hereinabove referred to, by which the socket is formed withspring arms or sections, are designated 9. Each of the spring arms orsections in the base-flangehas aprong or spur, and hence each of saidspring arms or sections has an independent bite on the article. Sincethe prongs or spurs are not upset or clenched within the article, it isobvious that they do not appreciably interfere with the resiliency ofthe socket when applied to a resilient socket. An additional functionpossessed by the prongs or spurs is the prevention of the deformation ofthe resilient sections of the base-flange, due to hard usage or blows,since these prongs or spurs, being covered by the cap 4, as alreadystated and as seen in Fig. 5, will transmit undue pressure on the flangeto the cap. without being distorted. Still another function possessed bythe prongs or spurs is the prevention of the overcoming of the elasticlimit of the resilient socket by the repeated connection anddisconnection of the socket with the stud, since the surrounding articleresistsundue lateralmovement, and to this extent the prongs or spurstake the place of the rings and springs heretofore used which have inView an analogous purpose.

hat I claim is A snap-fastener socket, comprising a socket proper havinga base-flange and a chamber rising from it and adapted to enter a holein the article to which the fastener is to be applied and also adaptedto receive the stud member, said chamber having an open top, and thechamber and flange radially slitted to .form spring-arms which extend tothe circumference of the flange, each of said spring-arms provided witha prong or spur to enter and impale the article around the hole thereinand prevent the socket from being pulled away from'the article, and afastening device adapted to be applied to the oppositeside of thearticle from the socket-and fixedly engage the open top of the chamberof the socket.

In testimony whereof I have hereunto set my hand this 11th day ofNovember, A. D. 1904:.

ERNEST D. SIMONS.

l/Vitn esses:

Gruo. E. TOMPKINS, E. A. HYDE.

